Photobiological Risk from the Spectral Emission of Human Centric LED Luminaires – Case Study

People spend most of their time indoors. That is a good reason for implementation Human Centric Lighting solutions in offices. Such solutions can lead to increased productivity and motivation to employees. The spectral composition of light, the timing of the different light scenes and the duration of light exposure play important role for the non-visual effects of light that occur in humans. Moreover, research has shown that these effects may depend on the environment, specifics of the activity, and personal characteristics of people. The use of LED Luminaires makes the implementation of Human Centric Lighting easy and possible. The LEDs as light sources, however can lead to blue light hazard risk that should be estimated. The human eye is adapted to function in a media of optical radiation that ensures not only vision, but also important physiological functions. The emission of LED luminaires is in wide spectrum, especially in the blue part, and it can be both favorable and harmful. The current paper represents an experimental research of the possibility of blue light hazard in a real human centric lighting system.